My airmax unit have a code E6 on the board when the electricity goes off. I turn the breaker off for 30 minutes and then on and the unit works. The last time didn't work and it still E6 and the unit is not working

I've never heard of the brand "Airmax"... is that possibly the company that put it in?
Could you please list the model number of the unit?
Where is the board where you see the E6 code?